Fix updating breakpoints when debugging starts

[mvtec-richter]

What it does

Previously, when starting to debug, the breakpoints did not move to valid lines. The breakpoints were send to the debug adapter before configurationDone and some debug adapters (e. g. python) return updated positions directly. The updates were not visible in the editor, because the connection was not marked as initialized yet and events were ignored. The updates became only visible, when changing breakpoints later.

Fixes #14096

How to test

• Write a small python program with empty lines.
• Set a breakpoint on an empty line and another line above
• Start debugging, the program should stop at the first breakpoint
  Now fixed:
• The breakpoint on the empty line should move to a valid line

Follow-ups

Breaking changes

• This PR introduces breaking changes and requires careful review. If yes, the breaking changes section in the changelog has been updated.

Attribution

Contributed by MVTec Software GmbH

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• As a reviewer, I agree to behave in accordance with the review guidelines